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These optional spreadsheets are provided to assist reporters in calculating emissions and in keeping records of these calculations. The data elements deferred until 2013 that will be collected for the first time in RY2012 enable emissions calculations to be executed within e-GGRT for certain subpart equations. As a result, affected Optional Calculation Spreadsheets will become obsolete. The Optional Calculation Spreadsheets associated with the equations below will become obsolete for this subpart beginning RY2012:
Copies of these spreadsheets can be downloaded at the Calculation Spreadsheet Archive. |
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This help page provides guidance for working with the supplemental subpart C calculation spreadsheets. The guidance provides step-by-step instructions for the following tasks:
- #Selecting Selecting the Appropriate Calculation Spreadsheet
- #Downloading Downloading a Calculation Spreadsheet
- #General General Information on Using a Calculation Spreadsheet
- Using the Equation C-1, C-8 Calculation Spreadsheet
- Using the Equation C-1a, C-8a Calculation Spreadsheet
- Using the Equation C-1b, C-8b Calculation Spreadsheet
- Using the Equation C-2a, C-2b, C-9a Calculation Spreadsheet
- Using the Equation C-2c, C-9b Calculation Spreadsheet
- Using the Equation C-3, C-8 Calculation Spreadsheet
- Using the Equation C-4, C-8 Calculation Spreadsheet
- Using the Equation C-5, C-8 Calculation Spreadsheet
- Using the Equation C-10 Calculation Spreadsheet
Specific information on each of the calculation spreadsheets is provided below:
Calculation Spreadsheet | Instructions |
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| Equation C-10 Calculation Spreadsheet.xls | C10 Help |
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Selecting the Appropriate Calculation Spreadsheet |
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Calculation Spreadsheet | Tier | Basis for Calculations | Configuration | Output(s) |
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1 | EF, Fuel Use, Default HHV | 1, 3, 4 | CO2 | |
1 | EF, Natural Gas Billing Records | 1, 3, 4 | CO2 | |
1 | EF, Natural Gas Billing Records | 1, 3, 4 | CO2 | |
2 | EF, Fuel Use, Measured HHV | 1, 3, 4 | CO2 | |
2 | EF, Steam Use, Boiler Max Rated Heat Input Capacity | 1, 3, 4 | CO2 | |
3 | Fuel Use, Measured Fuel Carbon Content | 1, 3, 4 | CO2 | |
3 | Fuel Use, Measured Fuel Carbon Content | 1, 3, 4 | CO2 | |
3 | Fuel Use, Measured Fuel Carbon Content | 1, 3, 4 | CO2 | |
| Equation C-10 Calculation Spreadsheet.xls | 4 | EF, Heat Input from Combustion | 2, 5, 6 | CH4 N2O |
Tier 1 Calculation Methodology
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Use this spreadsheet to calculate the annual CO2, CH4, and N2O mass emissions for a stationary fuel combustion configuration that uses the Equation C-1, Tier 1 calculation methodology for any given fuel. Use Equation C-1 on this spreadsheet except when natural gas billing records are used to quantify fuel usage and gas consumption is expressed in units of therms or million Btu. In that case, use Equation C-1a or C-1b, as applicable. This spreadsheet performs the calculation using Equations C-1 and C-8, which are provided below:
(Equation C-1)
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(Equation C-8)
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Equation C-1a, C-8a Calculation Spreadsheet
Use this spreadsheet to calculate the annual CO2, CH4, and N2O emissions from natural gas usage for a configuration that fires natural gas and only if billing records are used to quantify fuel usage and gas consumption is expressed in units of therms. This spreadsheet performs the calculations using Equations C-1a and C-8a, which are provided below:
(Equation C-1a)
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(Equation C-8a)
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Equations C-1b, C-8b Calculation Spreadsheet
Use the spreadsheet below to calculate the annual CO2, CH4, and N2O emissions from natural gas usage for a configuration that fires natural gas and only if billing records are used to quantify fuel usage and gas consumption is expressed in units of mmBtu. This spreadsheet performs the calculations using Equations C-1b and C-8b, which are provided below.
(Equation C-1b)
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(Equation C-8b)
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Tier 2 Calculation Methodology
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Use this spreadsheet to calculate the annual CO2, CH4, and N2O mass emissions for a stationary fuel combustion configuration that uses the Tier 2 calculation methodology. This spreadsheet performs the calculation using Equations C-2a, C-2b, and C-9a, which are provided below (although included, Equation C-2b is not always required, see 40 CFR 98.33(a)(2)(ii)):
(Equation C-2a)
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(Equation C-2b)
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(Equation C-9a)
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Equation C-2c, C-9b Calculation Spreadsheet
Use this spreadsheet to calculate the annual CO2, CH4, and N2O emissions for a stationary fuel combustion configuration that uses the Equation C-2c, Tier 2 calculation methodology. This worksheet should be used for MSW when the use of Tier 2 is allowed or (optionally) for solid fuels using Tier 2 that generate steam. This spreadsheet performs the calculations using Equations C-2c and C-9b, which are provided below:
(Equation C-2c)
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(Equation C-9b)
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Tier 3 Calculation Methodology
To calculate the annual CO2, CH4, and N2O mass emissions for each type of fuel using Tier 3 in each type of reporting configuration, use Equation C-3, C-8 Calculation Spreadsheet, Equation C-4, C-8 Calculation Spreadsheet, or Equation C-5, C-8 Calculation Spreadsheet.
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Use the spreadsheet below to calculate the annual CO2, CH4, and N2O mass emissions for solid fuels using Tier 3 Calculation methodology at each configuration. This spreadsheet performs the calculation using Equations C-3 and C-8, which are provided below:
(Equation C-3)
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(Equation C-8)
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Equation C-4, C-8 Calculation Spreadsheet
Use the spreadsheet below to calculate the annual CO2, CH4, and N2O mass emissions for liquid fuels using the Tier 3 calculation methodology at each configuration. This spreadsheet performs the calculations using Equations C-4 and C-8, which are provided below:
(Equation C-4)
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(Equation C-8)
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Equations C--5, C-8 Calculation Spreadsheet
Use the spreadsheet below to calculate the annual CO2, CH4, and N2O mass emissions for gaseous fuels using the Tier 3 calculation methodology at each configuration. This spreadsheet performs the calculations using Equations C-5 and C-8, which are provided below:
(Equation C-5)
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(Equation C-8)
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Downloading a Calculation Spreadsheet |
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The guidance provided in this section applies to each of the calculation spreadsheets for subpart C. Additional guidance is provided for each individual calculation spreadsheet in the sections below.
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Multiple Configuration Types and Multiple Fuels
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Use this spreadsheet to calculate the annual CO2, CH4, and N2O mass emissions for a stationary fuel combustion configuration that uses the Equation C-1, Tier 1 calculation methodology for any given fuel. Use Equation C-1 on this spreadsheet except when natural gas billing records are used to quantify fuel usage and gas consumption is expressed in units of therms or million Btu. In that case, use Equation C-1a or C-1b, as applicable. Use a separate spreadsheet for each configuration and for each fuel. The Equation C-1, C-8 Calculation Spreadsheet performs the calculations using Equations C-1 and C-8 provided below.
(Equation C-1)
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(Equation C-8)
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Begin by entering the facility name, your name, the configuration identifier, reporting period, and any additional comments in the green input cells of the general information table located immediately below the equation in the calculation spreadsheet. This is for your records.
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Next, enter the requested information in the green input cells in the Fuel Input Data table.
The calculation spreadsheet will calculate the annual CO2, CH4, and N2O emissions from fuel combustion. The calculation spreadsheet will also convert CH4 and N2O emissions to units of carbon dioxide equivalent (CO2e). The calculated values will be displayed in red-bordered cells at the bottom of the spreadsheet. These values should be entered in e-GGRT for this fuel and configuration type combination.
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Using the Equation C-1a, C-8a Calculation Spreadsheet |
Use this spreadsheet to calculate the annual CO2, CH4, and N2O emissions from natural gas usage for a configuration that fires natural gas and if billing records are used to quantify fuel usage and gas consumption is expressed in units of therms. Use a separate spreadsheet for each configuration and for each fuel. The Equation C-1a, C-8a Calculation Spreadsheet performs the calculations using Equations C-1a and C-8a provided below.
(Equation C-1a)
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(Equation C-8a)
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Begin by entering the facility name, your name, the configuration identifier, reporting period, and any additional comments in the green input cells of the general information table located immediately below the equation in the calculation spreadsheet. This is for your records.
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The calculation spreadsheet will calculate the annual CO2, CH4, and N2O emissions from fuel combustion. The calculation spreadsheet will also convert CH4 and N2O emissions to units of carbon dioxide equivalent (CO2e). The calculated values will be displayed in red-bordered cells at the bottom of the spreadsheet. These values should be entered in e-GGRT for this fuel and configuration type combination.
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Using the Equation C-1b, C-8b Calculation Spreadsheet |
Use this spreadsheet to calculate the annual CO2 , CH4, and N2O emissions from natural gas usage for a configuration that fires natural gas and if billing records are used to quantify fuel usage and gas consumption is expressed in units of mmBtu. Use a separate spreadsheet for each configuration and for each fuel. The Equation C-1b, C-8b Calculation Spreadsheet performs the calculations using Equations C-1b and C-8b provided below.
(Equation C-1b)
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(Equation C-8b)
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Begin by entering the facility name, your name, the configuration identifier, reporting period, and any additional comments in the green input cells of the general information table located immediately below the equation in the calculation spreadsheet. This is for your records.
Next, enter the requested information in the green input cells in the Fuel Input Data table.
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The calculation spreadsheet will calculate the annual CO2, CH4, and N2O emissions from fuel combustion. The calculation spreadsheet will also convert CH4 and N2O emissions to units of carbon dioxide equivalent (CO2e). The calculated values will be displayed in red-bordered cells at the bottom of the spreadsheet. These values should be entered in e-GGRT for this fuel and configuration type combination.
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Using the Equation C-2a, C-2b, C-9a Calculation Spreadsheet |
Use this spreadsheet to calculate the annual CO2, CH4, and N2O mass emissions for a stationary fuel combustion configuration that uses the Equation C-2a, Tier 2 calculation methodology. This spreadsheet performs the calculation using Equations C-2a, C-2b, and C-9a, which are provided below (although included, Equation C-2b is not always required, see 40 CFR 98.33(a)(2)(ii)). Use a separate spreadsheet for each configuration and for each fuel. The Equation C-2a, C-2b, C-9a Calculation Spreadsheet performs the calculations using Equations C-2a, C-2b, and C-9a provided below.
(Equation C-2a)
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(Equation C-2b)
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(Equation C-9a)
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Begin by entering the facility name, your name, the configuration identifier, reporting period, and any additional comments in the green input cells of the general information table located immediately below the equation in the calculation spreadsheet. This is for your records.
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The calculation spreadsheet will calculate the weighted annual average high heat value of the fuel (HHVannual). The calculated value will be displayed in a red-bordered cell with yellow fill above the Fuel Input Data table. This value should be entered in the Fuel Input Data table (shown below) along with the mass or volume of fuel combusted during the reporting year. Alternatively, you may enter an annual average HHV consistent with Section 98.33(a)(2)(ii).
Next, enter the requested information in the green input cells in the Fuel Input Data table.
The calculation spreadsheet will calculate the annual CO2, CH4, and N2O emissions from fuel combustion. The calculation spreadsheet will also convert CH4 and N2O emissions to units of carbon dioxide equivalent (CO2e). The calculated values will be displayed in red-bordered cells with white fill at the bottom of the spreadsheet. These values should be entered in e-GGRT for this fuel and configuration type combination.
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Using the Equation C-2c, C-9b Calculation Spreadsheet |
Use this spreadsheet to calculate the annual CO2, CH4, and N2O emissions for a stationary fuel combustion configuration that uses the Equation C-2c, Tier 2 calculation methodology. This spreadsheet should be used for MSW when the use of Tier 2 is allowed or (optionally) for solid fuels using Tier 2 in units that generate steam. Use a separate spreadsheet for each configuration and for each fuel. The Equation C-2c, C-9b Calculation Spreadsheet performs the calculations using Equations C-2c and C-9b provided below.
(Equation C-2c)
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(Equation C-9b)
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Begin by entering the facility name, your name, the configuration identifier, reporting period, and any additional comments in the green input cells of the general information table located immediately below the equation in the calculation spreadsheet. This is for your records.
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The calculation spreadsheet will calculate the annual CO2, CH4, and N2O emissions from fuel combustion. The calculation spreadsheet will also convert CH4 and N2O emissions to units of carbon dioxide equivalent (CO2e). The calculated values will be displayed in red-bordered cells at the bottom of the spreadsheet. These values should be entered in e-GGRT for this fuel and configuration type combination.
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Using the Equation C-3, C-8 Calculation Spreadsheet |
Use this spreadsheet to calculate the annual CO2, CH4, and N2O mass emissions for solid fuels using Tier 3 Calculation methodology at each configuration. Use a separate spreadsheet for each configuration and for each fuel. The Equation C-3, C-8 Calculation Spreadsheet performs the calculations using Equations C-3 and C-8 provided below.
(Equation C-3)
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(Equation C-8)
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Begin by entering the facility name, your name, the configuration identifier, reporting period, and any additional comments in the green input cells of the general information table located immediately below the equation in the calculation spreadsheet. This is for your records.
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Next, enter the requested information in the green input cells in the Fuel Input Data table.
The calculation spreadsheet will calculate the annual CO2, CH4, and N2O emissions from fuel combustion. The calculation spreadsheet will also convert CH4 and N2O emissions to units of carbon dioxide equivalent (CO2e). The calculated values will be displayed in red-bordered cells at the bottom of the spreadsheet. These values should be entered in e-GGRT for this fuel and configuration type combination.
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Using the Equation C-4, C-8 Calculation Spreadsheet |
Use this spreadsheet to calculate the annual CO2, CH4, and N2O mass emissions for liquid fuels using the Tier 3 calculation methodology at each configuration. Use a separate spreadsheet for each configuration and for each fuel. The Equation C-4, C-8 Calculation Spreadsheet performs the calculations using Equations C-4 and C-8 provided below.
(Equation C-4)
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(Equation C-8)
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Begin by entering the facility name, your name, the configuration identifier, reporting period, and any additional comments in the green input cells of the general information table located immediately below the equation in the calculation spreadsheet. This is for your records.
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Next, enter the requested information in the green input cells in the Fuel Input Data table.
The calculation spreadsheet will calculate the annual CO2, CH4, and N2O emissions from fuel combustion. The calculation spreadsheet will also convert CH4 and N2O emissions to units of carbon dioxide equivalent (CO2e). The calculated values will be displayed in red-bordered cells at the bottom of the spreadsheet. These values should be entered in e-GGRT for this fuel and configuration type combination.
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Using the Equation C-5, C-8 Calculation Spreadsheet |
Use this spreadsheet to calculate the annual CO2, CH4, and N2O mass emissions for gaseous fuels using the Tier 3 calculation methodology at each configuration. Use a separate spreadsheet for each configuration and for each fuel. The Equation C-5, C-8 Calculation Spreadsheet performs the calculations using Equations C-5 and C-8 provided below.
(Equation C-5)
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(Equation C-8)
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Begin by entering the facility name, your name, the configuration identifier, reporting period, and any additional comments in the green input cells of the general information table located immediately below the equation in the calculation spreadsheet. This is for your records.
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Next, enter the requested information in the green input cells in the Fuel Input Data table.
The calculation spreadsheet will calculate the annual CO2, CH4, and N2O emissions from fuel combustion. The calculation spreadsheet will also convert CH4 and N2O emissions to units of carbon dioxide equivalent (CO2e). The calculated values will be displayed in red-bordered cells at the bottom of the spreadsheet. These values should be entered in e-GGRT for this fuel and configuration type combination.
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Using the Equation C-10 Calculation Spreadsheet
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Use the Equation C-10 Calculation Spreadsheet to calculate annual CH4, and N2O emissions using an emission factor and the annual heat input from a fuel combusted in units that use Tier 4 (CEMS, Configuration Types 2 and 5), or, to check e-GGRT’s calculations of annual CH4, and N2O emissions for units that report under 40 CFR Part 75 (Configuration Type 6). You can also use the Equation C-10 Calculation Spreadsheet to calculate annual CH4 and N2O emissions from fuel combustion in units that use Tier 4 to calculate combined process and combustion CO2 emissions. Use a separate spreadsheet for each configuration and for each fuel. The Equation C-10 Calculation Spreadsheet performs the calculations using Equation C-10 provided below.
(Equation C-10)
Click to download the Equation C-10 Calculation Spreadsheet.
See Also
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